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John M. S. Bartlett.pdf - Bio-Nica.info

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328 Han and Robinson<br />

Fig. 1. Basic steps in SSCP Procedure. 1. The DNA or cDNA fragment of interest is amplified<br />

by PCR incorporating 32 P-dCTP. 2. The PCR amplified-labeled DNA fragment is denatured<br />

by heating. 3. Fragments are separated on an acrylamide gel. 4. Patterns are revealed by<br />

autoradiography.<br />

gel is variable, dependent upon characteristics of the sequence amplified, and can be<br />

determined empirically. The final step is autoradiography to visualize the bands of<br />

radiolabeled DNA in the gel.<br />

Analysis of SSCP autoradiograms is performed visually. Each sequence amplified<br />

in step one will often result in two bands on a corresponding autoradiogram. One band

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